Classification
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540 - Chemistry & allied sciences
7
550 - Earth sciences
16
551 - Geology, hydrology & meteorology
86
553 - Economic geology
1
576 - Genetics & evolution
1,364
580 - Plants (Botany)
20
581 - Specific topics in natural history
44
600 - Technology
327
603 - Dictionaries & encyclopedias
2
610 - Medicine & health
466
615 - Pharmacology & therapeutics
1
616 - Diseases
1
620 - Engineering & allied operations
70
622 - Mining & related operations
1
630 - Agriculture & related technologies
2,376
637 - Processing dairy & related products
1
639 - Hunting, fishing & conservation
1
650 - Management & auxiliary services
21
657 - Accounting
21
658 - General management
50
662 - Explosives, fuels & related products
1
692 - Auxiliary construction practices
1
700 - The arts; fine & decorative arts
1,586
720 - Architecture
86
769 - Prints
1
770 - Photography, photographs & computer art
6
780 - Music
64
791 - Public performances
4
800 - Literature & rhetoric
264
828 - English miscellaneous writings
1
843 - French fiction
1
900 - History & geography
6,842
913 - Geography of & travel in ancient world
1
917 - Geography of & travel in North America
2
920 - Biography, genealogy & insignia
16
923 - (Optional number)
1
939 - Other parts of ancient world to ca. 640
1
940 - History of Europe
1
941 - British Isles
1
943 - Central Europe; Germany
1
944 - France & Monaco
1
946 - Iberian Peninsula & adjacent islands
1
949 - Other parts of Europe
1
954 - South Asia; India
1
972 - Middle America; Mexico
1
973 - United States
1
975 - Southeastern United States
1
986 - Colombia & Ecuador
1